On hearing it, many of his disciples said, “This is a hard teaching. Who can accept it?”
Aware that his disciples were grumbling about this, Jesus said to them, “Does this offend you? Then what if you see the Son of Man ascend to where he was before! The Spirit gives life; the flesh counts for nothing. The words I have spoken to you—they are full of the Spirit and life. Yet there are some of you who do not believe.” For Jesus had known from the beginning which of them did not believe and who would betray him. He went on to say, “This is why I told you that no one can come to me unless the Father has enabled them.”
From this time many of his disciples turned back and no longer followed him.
“You do not want to leave too, do you?” Jesus asked the Twelve.
Simon Peter answered him, “Lord, to whom shall we go? You have the words of eternal life. We have come to believe and to know that you are the Holy One of God.”
A basic teaching of Scripture is the truth that it’s not enough to start. We must continue on and finish. You see this over and over again in story and specific directive teaching.
The life of faith is not just a beginning, but a process with an ending. It involves ongoing change. And difficulty in understanding it all or at all at times is part and parcel of it all.
Note the passage above (click link for context). Many disciples, yes disciples left Jesus at a certain point. They wouldn’t follow any longer; his words were just too much for them.
Are there times when we simply don’t know, but by faith continue on? Yes, yes, and yes some more. Peter’s words are instructive for us here. They center not on specific teaching per se, but rather on Christ himself. For me, it’s continual, to some extent, constant interaction with God’s inscripturated word, which itself points to and is fulfilled in the Word himself, Jesus. But in ways not always readily received or appreciated.
The point is that we need to continue on following Jesus. In and through him.